Electrode for secondary galvanic cells.



H. P. R. L. PljRSGKE & J. A. E. AOHENBACH.

ELECTRODE FOR SECONDARY GALVANIO CELLS.

APPLICATION FILED MAY 1, lull.

Patented July 8, 1913.

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HEINRICH PAUL RUDOLF LUDWIG PfiR-SCKE AND JULIUS ADOLPH ERWIN ACHEN- BACH, OF HAMBURG, GERMANY.

ELECTRODE FOR SECONDARY GALVANIC CELLS.

1,066,651. Specification of Application filed May 1, 1911.

To all whom it mag] concern:

Be it known that we, HrnNnIc-Ir PAUL RU- DOLF LUnwIo Poussin: and JULIUS Anonri-r ERWIN AcrIENBAen, subjects of the German Emperor, residing at Hamburg, in Germany, have invented a certain new and useary Galvanic Cells, of which the following is a specification.

In the specification filed with our co-pending application Serial No. 622644 we have described the method of manufacturing an electrode for a secondary cell by pasting the active mass into the interstices of a piece of fine meshed metal fabric, and rolling said fabric upon a rod.

Our present invention consists in a m0di-, fication of this method, and is illustrated in the accompanying drawing, in which,

Figure 1 shows the metal fabric with the scales of active mass; Fig. 9. shows a roll of this fabric, Fig. 3, a receptacle for said roll, and Fig. 4, a composite electrode.

For the purpose of our present invention the fabric a, with scales 6 of active mass m the interstices thereof, is formed into a compact cake, cylinder, rod or the like. This may be done by rolling the fabric, either a single piece thereof or a plurality of strips, as shown in Fig. 2. It may also be done b folding. The cake or block thus produce Letters Patent. Patented July 8, 1913.

Serial No. 624,357.

consisting of a porous metal body with active mass in the interstices, is then placed in a perforated metal receptacle 0 (Fig. 3), a suitable amount of pressure being used during the insertion, to produce good contact. This receptacle, with the cake therein, may be singly used as an electrode, or a plurality thereof may be collectively fixed to a conductive frame (1, as shown in Fig. 4, to make a composite electrode.

That we claim as our invention and desire to secure by Letters Patent of the United States is:

An electrode for alkaline secondary bat teries, which consists of poorly conductive active material in which is embedded a con-' ductive carrier of very thin metal having a large number of minute perforations, the Whole being tightly rolled to form a cylin- 0 der, and a perforated metal casing, inclosing such cylinder, a plurality of such elements being assembled in a metal frame.

In witness whereof we have signed this specification in the presence of two wlt- 55 nesses.

HEINRICH PAUL ltUDOLF LUllWlG ltlRSCKE. JULIUS ADOLPH ERWIN AUllENllACll.

. WVitnesses:

ERNEST H. L. MUMMnNnorr, EDUARD Horn. 

